Michael Riley

as Jack

as William Hunter

as Dr. Aaron Kade

as Garrett Fowler

as Dr. Tom Wexler

as Mike Bartholomy

as Doctor Burrit Greyson

as Rick Erwin

as Harry Stein

as Carl

as Rick Lieberman

as Kurt

as Jax

as The Man

as Ty Kellington

as Elliot Sacks

as General John Reynolds

as Peter

as Robert Fraser

as Rod Dunbar

as Stephen Crowe

as Sam

as Ace Lightning (voice)

as Steven McCormick

as Dennis Winslow

as Father Ed

as Greg

as Michael

as British Officer

as Ray

as Adam Schuster

as Rick Neufeld

as M. Campbell

as Dr. Nick Galler

as Gerard

as Jon Tarkman

as Clive Walton

as Walter Sparks

as Alexander Ross

as Alex

as Matthew

as Joe 'Polock' Kozenczak

as Joe Kozenczak

as Les

as Renzo Parachi

as Horton

as Gary